Backup/Ftp question

I have set WHM to create a daily backup on my second drive. I would like to access the backup on the drive via ftp to make another backup externally. However I can not figure out how to access the files on drive 2. I either need an ftp account which give access to drive 2 or some kind of symbolic link from drive 2 to the main drive. However I am unable to create either. I am not a unix guru. Can someone please advice?